Actuator



FIG. 1 is a perspective view of our actuator;

FIG. 2 is a front elevational view of our actuator;

FIG. 3 is a rear elevational view of our actuator;

FIG. 4 is an elevational view of one side our actuator;

FIG. 5 is an elevational view of the other side our actuator; and,

FIG. 6 is a top plan view of our actuator. 

We claim the ornamental design for an actuator, as shown and described. 